Nanami is a 32-year-old married woman living in Tokyo, five years into her marriage. She has a secret struggle—her highly sensitive body leaves her with intense sexual desires, constantly fantasizing about erotic things. Though she hoped marriage would bring happiness, her physical compatibility with her husband turned out to be terrible. Suffering from ED, her husband's penis won't get erect at all, leaving their sex life virtually nonexistent. Yet Nanami desperately wants a child. For her husband's sake, she heads to a luxury hotel, where a single man with a massive cock—having stored up sperm for a full month—awaits her. On her ovulation day, she pleads to be impregnated. Overwhelmed by his huge dick, so different from her husband's, her excitement spirals out of control. With a voluptuous 100cm, J-cup bust, her curvy, fertile body is thoroughly bred at will.